Predictive functional profiling of water bacterial community in the integrated culture of Pacific white shrimp and Nile tilapia under heterotrophic and mature biofloc systems

Martins, Mateus Aranha; Mouriño, José Luiz Pedreira; Seiffert, Walter Quadros; Vieira, Felipe do Nascimento

doi:10.1111/are.16000

Cited by 1 publication

(1 citation statement)

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“…This finding can be attributed to the use of a mature biofloc inoculum at the beginning of the experiment. This inoculum consisted of a diverse microbial community composed of nitrifying and heterotrophic bacteria, developing in suspension in the water (Martins et al, 2022). This microbial community is essential for the establishment of a stable and functional ecosystem, because it promotes the transformation of organic waste into solid particles, which serve as a natural food source for shrimp in the nursery stage (Said et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Evaluation of feeding table optimizations in Pacific white shrimp nursery biofloc systems

Padilla,

Martins,

Carneiro

et al. 2024

Bol. Inst. Pesca

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A 45-day experiment was conducted to optimize feeding rates in the nursery phase of Pacific white shrimp reared in biofloc systems (BFT). Four treatments were evaluated in quadruplicate, according to the Van Wyk table: maximum feeding rate; minimum feeding rate; minimum feeding rate minus 10%; and maximum feeding rate plus 10%. Post-larvae (0.08 ± 0.00 g) were cultured at the density of 2,000 shrimp·m-3, and water quality, solids production, and productive performance were all monitored. No significant difference was observed in final mean weight (1.47 ± 0.17 g), productivity (2.34 ± 0.20 kg·m-3) and survival (85.29 ± 5.44%) among treatments, but feed conversion ratio was significantly lower in the minimum feeding rate and minimum feeding rate minus 10% treatments, indicating efficient feed conversion without compromising growth. These treatments also resulted in lower values of toxic nitrogen compounds and total suspended solids, suggesting a positive impact on water quality. Although these rates proved suitable, continuous adjustments are needed owing to variations in the BFT system. This study provides guidelines for optimizing feeding management in superintensive BFT nursery systems.

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Section: Discussionmentioning

confidence: 99%